Soft water has hardness levels of –
Correct Answer: <50
Description: Level of hardness is expressed in terms of milliequivalents per litre where one milliequivalent is equal to 50mg calcium carbonate in one litre of water. The level of hardness of hard water is equal to 3-6mEq/L or 150-300 mg/L. CLASSIFICATION LEVEL OF HARDNESS (mEq./L) LEVEL OF HARDNESS (mg/L) soft water <1 <50 moderately hard 1-3 50-150 hard water 3-6 150-300 very hard >6 >300 Park's Textbook of Preventive and Social Medicine, 25th edition, Page No.787
Category:
Social & Preventive Medicine
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now